diff options
Diffstat (limited to 'bidict.py')
| -rw-r--r-- | bidict.py | 20 |
1 files changed, 0 insertions, 20 deletions
diff --git a/bidict.py b/bidict.py deleted file mode 100644 index 5ba3fc3..0000000 --- a/bidict.py +++ /dev/null @@ -1,20 +0,0 @@ -#!/usr/bin/env python3 - -class bidict(dict): - def __init__(self, *args, **kwargs): - super(bidict, self).__init__(*args, **kwargs) - self.inverse = {} - for key, value in self.items(): - self.inverse.setdefault(value, []).append(key) - - def __setitem__(self, key, value): - if key in self: - self.inverse[self[key]].remove(key) - super(bidict, self).__setitem__(key, value) - self.inverse.setdefault(value, []).append(key) - - def __delitem__(self, key): - self.inverse.setdefault(self[key], []).remove(key) - if self[key] in self.inverse and not self.inverse[self[key]]: - del self.inverse[self[key]] - super(bidict, self).__delitem__(key) |
